SIST EN 1804-1:2002

SLOVENSKI STANDARD
01-junij-2002
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Machines for underground mines - Safety requirements for hydraulic powered roof
supports - Part 1: Support units and general requirements
Maschinen für den Bergbau unter Tage - Sicherheitsanforderungen für hydraulischen
Schreitausbau - Teil 1: Ausbaugestelle und allgemeine Anforderungen
Machines pour mines souterraines - Exigences de sécurité relatives aux soutenements
marchants applicables aux piles - Partie 1: Unités de soutenement et exigences
générales
Ta slovenski standard je istoveten z: EN 1804-1:2001
ICS:
73.100.10 Oprema za gradnjo predorov Tunnelling and tubbing
in podzemnih železnic equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 1804-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2001
ICS 73.100.10
English version
Machines for underground mines - Safety requirements for
hydraulic powered roof supports - Part 1: Support units and
general requirements
Machines pour mines souterraines - Exigences de sécurité Maschinen für den Bergbau unter Tage -
relatives aux soutènements marchants applicables aux Sicherheitsanforderungen für hydraulischen Schreitausbau
piles - Partie 1: Unités de soutènement et exigences - Teil 1: Ausbaugestelle und allgemeine Anforderungen
générales
This European Standard was approved by CEN on 21 September 2001.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1804-1:2001 E
worldwide for CEN national Members.

Contents
page
Foreword. 3
0 Introduction. 3
1 Scope . 3
2 Normative references . 4
3 Terms and definitions . 5
4 List of hazards . 7
5 Safety requirements . 7
6 Verification of the safety requirements . 11
7 User information . 12
Annex A (normative) Tests for verification of the safety requirements and calculation. 17
Annex ZA (informative) Relationship of this document with EC Directives . 33
Bibliography . 34
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 196 "Machines for
underground mining - Safety", the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by April 2002, and conflicting national standards shall be withdrawn at
the latest by April 2002.
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association, and supports essential requirements of EC Directive(s).
For relationship with EC Directive(s), see informative Annex ZA, which is an integral part of this standard.
This standard is Part 1 of a European Standard specifying the safety requirements for hydraulic powered
roof supports.
Other parts are:
Part 2: Power set legs and rams
Part 3: Hydraulic control systems
Part 4 ): Electro-hydraulic control systems
Annex A is normative.
This standard includes a Bibliography.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
Spain, Sweden, Switzerland and the United Kingdom.
0 Introduction
This European Standard is a Type C-standard as stated in EN 1070.
The extent to which hazards are covered is indicated in the scope of the standard.
While producing (or when compiling) this standard it was assumed that:
- only trained and competent persons operate the machine;
- components without specific requirements are:
a) designed in accordance with the usual engineering practice and calculation codes;
b) of sound mechanical construction;
c) free of defects.
- components are kept in good working order;
- a negotiation took place between the user and the manufacturer concerning the use of the machin-
ery.
1 Scope
This standard specifies the safety requirements for support units when used as specified by the
manufacturer or his authorised representative. Examples of support units are frame supports, chock
supports, shield supports, paired frames and push-pull support systems including the components of
advancing and anchoring devices which provide support functions. This part of the standard excludes fixing
elements on the conveyor, coal-winning equipment, power set legs and rams, valves, hydraulic and electro-
hydraulic control units, lighting and signalling facilities and other ancillary equipment.
NOTE Some components are dealt with in other parts of this standard.
This standard applies to support units used at temperatures from -10° C to 60° C.
This standard also applies to support components and support accessories which are provided if the
support unit is fitted with stowing equipment. This standard identifies and takes account of:

) in preparation
- Possible hazards which may be caused by the operation of support units;
- Areas and operating conditions which may create such hazards;
- Hazardous situations which may cause injury or may be damaging to health;
This standard describes methods for the reduction of these hazards.
A list of hazards covered appears in clause 4.
This European standard does not establish the additional requirements for:
- Specially corrosive environments;
- Hazards occurring during construction, transportation, decommissioning;
- Earthquake.
This standard is applicable to all support units placed on the market for the first time, which are
manufactured after the date on which this standard was published.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text, and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply
to this European Standard only when incorporated in it by amendment or revision. For undated references
the latest edition of the publication referred to applies (including amendments).
EN 287-1 Approval testing of welders - Fusion welding - Part 1: Steels.
EN 288-1 Specification and approval of welding procedures for metallic materials - Part 1: General
rules for fusion welding.
EN 288-2 Specification and approval of welding procedures for metallic materials - Part 2: Welding
procedure specification for arc welding.
EN 288-3 Specification and approval of welding procedures for metallic materials - Part 3: Welding
procedure tests for the arc welding of steels.
EN 292-1:1991 Safety of machinery - Basic concepts - General principles for design - Part 1: Basic
terminology, methodology.
EN 292-2:1991 Safety of machinery - Basic concepts - General principles for design - Part 2: Technical
+ A1:1995 principles and specification.
EN 1050:1996 Safety of machinery – Principles for risk assessment.
EN 1070 Safety of machinery – Terminology.
EN 1804-2 Machines for underground mines - Safety requirements for hydraulic powered roof sup-
ports - Part 2: Power set legs and rams.
prEN 1804-3 Machines for underground mines - Safety requirements for hydraulic powered roof sup-
ports – Part 3: Hydraulic control systems.
ENV 1993-1-1:1992
Eurocode 2: Design of steel structures - General rules and rules for buildings - General
rules and rules for buildings.
EN 10002-1 Metallic material - Tensile testing - Part 1: Method of test.
EN 10025:1990 + A1:1993 Hot rolled products of non-alloy structural steels - Technical delivery conditions.
EN 10045-1 Metallic materials - Charpy impact test- Part 1: test method.
prEN 13463-1:1999Non-electrical equipment for potentially explosive atmospheres- Part 1: Basic method-
ology and requirements.
EURONORM 103:1971
Microscopic determination of the ferrite or austenitic grain size of steels.
3 Terms and definitions
For the purposes of this standard the following terms and definitions apply.
3.1
designs of hydraulic powered roof support
3.1.1
support unit
type of hydraulic powered roof support, e.g. frame support, chock support, shield support, consisting of
support components and support accessories
3.1.2
frame support
support unit in which the canopy and the base are connected to legs arranged in a line one behind the other
to form one support unit
3.1.3
chock support
support unit in which the canopy and the base are connected to legs arranged one behind the other and
side by side to form one support unit
3.1.4
shield support
support unit in which the canopy and the base are connected additionally via a goaf shield which lies within
the flow of the support bearing force
3.1.5
paired frame
at least two support units arranged side by side moving lengthwise against each other using an advancing
mechanism
3.1.6
push-pull support
at least two support units arranged one behind the other moving lengthwise against each other using an
advancing mechanism
3.2
support components
all components which lie within the flow of the support bearing force
3.2.1
canopy
single or composite support component which transfers the support bearing force to the roof
3.2.2
base
single or composite support component which transfers the support bearing force to the floor
3.2.3
goaf shield
support component intended to absorb and transfer, fully or partially, the support bearing force and forces
parallel to the seam between canopy and base. It is connected to the canopy and base either directly or
through a linkage. It generally shields the face area from the waste and is therefore subjected to a load from
the caved material
3.3
support accessories
all components which do not lie within the flow of the support bearing force but which are necessary for the
functioning of the powered roof support
3.3.1
advancing mechanism
device attached to the support unit for moving the support forwards
3.3.2
sprag
device attached to the support unit for supporting the working face
3.3.3
forepoling device
device used to protect the face area from caving materials
3.4
anchoring device
device for preventing uncontrolled movements of the conveying and extracting machines
3.5
forces
3.5.1
yield force
force produced by an actuator at the yield pressure of the pressure limitation valve, neglecting friction
3.5.2
rated force
maximum force for which the support unit or support component is designed. It is a calculated value which
is determined from the support geometry neglecting friction
3.5.3
support bearing force
force borne by a support unit normal to the strata, which is a function of the support height and which
occurs at the yield force
3.5.4
test force
measured force required to be applied to the support unit or support component to ensure that it is
subjected to the rated force
3.5.5
additional force
force acting on the support unit, not produced by the strata or the support components
4 List of hazards
All the items in the following list of hazards refer to continuous operation and to installation and
maintenance.
This list contains the hazards and hazardous situations, as far as they are dealt with in this European
Standard, identified by risk assessment significant for this type of machinery and which require action to
eliminate or reduce risk.
Table 1 - List of hazards with cross references to safety requirements
No. EN 1050:1996 Safety requirements (clause) Hazards
1 1.1; 1.2; 1.3 5.1.1 Crushing, shearing and cutting
2 1.9 5.1.3 fluid injection
3 17 5.4.1 Ejected parts
4 1e 5.1.6; 5.1.7; 5.3.1; 5.3.2; 5.3.4; Fatigue or overload
5.3.5; 5.3.6; 5.3.7;5.4.1;5.4.3; 5.5;
5.6; 5.7
5 19; 21.1 5.1.1 Slipping, stumbling and falling in the
support
6 2.4 5.4.3 Electrical energy resulting from electro-
static processes
7 7.1 5.1.2 Inhaling harmful dusts
...